Mounting for rock drills



E. B. LEAR IOUNTING FOR ROCK DRILLS Filed June 25. 1927 April 10, 1928. 1,665,269

X mm llllll \1 capable o Patented Apr. 10, I928.

EARL 11mm, or rnrnmrsnune, NEW JERSEY, nssIeNon T0 INGEnsoLL-RnnD COMPA Y, or JERSEY crr rmnnw annsnxn ooaronn'rron onnnw JERSEY.

. MOUNTING rortnocn pa nts.

Application filed 'June 25, 1927. Serial'N o. 201,425. or

This invention relates'to rock drills, but more particularly to a carriage adapted to be attached to '-a'rock drill "of the hand held type. I p

It is an object of the invention to render a hand sup orted rock drill, such as a sinker,

being used as a drifter. j

Other objects will appear hereinafter,

and to all of these ends the invention co'n- 'sists of the combination of elements and fea- V tures of construction substantially as hereinwhereby the clamping plate 0 may be seafter described and lclaimed and illustrated I in the accompanying drawings, in which Figure l is a longitudinal elevation, partly in section, of a rock drill having the invention applied thereto,

Figure 2 is a transverse view taken through Figure I-on the line 2-2 looking in the direction indicated by the arrows, and

Figure 3 is aperspective view of "the carfriage."

' Referring to the drawings, A designates f a rockdrill, only thecasing parts ofwhich are shown. "These parts in the present instance comprise acylinder B at the front end of which is" disposed a front head secured in operative position .with respect to the cylinder B' by side bolts D. At'the rearward end of the cylinder B are located the usual rotation devices only the casing parts E of which are shown? 1 p The parts so far described are intended to illustrate a rock drill of the hand held type,

,such as a sinker or other handheld tools which are ordinarily provided with handles whereby'the drill may be guided and sup-' ported by the operator. 7

In accordance with the present invention,

the usual back head and associated handle ordinarily carried by the drill has been replaced by a back head F resembling inmost respects'the type of back heads usually provided on rock drills of the drifter type.

The back head F [is also held in operative position by the side bolts 1) and may be equipped with the usual water cleansing devices of which only the water tube G is indicated.

Means are provided to render the drill A capable of use as, a driftenthat is,.for drilling inclined and horizontal holes. These means comprise a carriage H having a support or bearing J on its front end in which is formed a recess K shaped generally to conform to the surface of the front portion of and said bolts L eXtendIWith-their up ends through a' clamping plate 0 whlch,

the drill, suchas the'front end of the cylinder B. In the present instance bolts L are disposed in the outer extremities ofthe bearing likethe bearing J, also conforms to the surface-of, the casing parts of that portion of thedrill 'wherewith it is adapted to cooperate;

The bolts Lare of a suitable length toreceive nuts P on the threaded ends thereof curely pressed against the body of the drill V The bolts Loin this "instance are so' spacedf with respect to the drill that they grooves Rare formed in'the sides of'the front cylinder washer Q. and these grooves 'liebetween theside bolts D and, as inthe present instance,- a front cylinder washer Q, interposed between the, front head ,0 and the ,cylindenBf To'accommodate the ibolts L column orother suitable supporting means; 1

In common with shells of the type ,disclosed, the shell V is equipped with a usual feed screw X for moving a rock jdri-ll or, as in the present instance, the rock drill and the carriage longitudinally Of'theshellin order to feed the rock drill to the work and retract it therefrom. The ,feed screw' X in this instance is threaded through a feed nut Y which extends through apers tures Z and b in the rearward end of the carriage H' and a lug 0 on the back'head F respectively.

In addition to the function described, the feed nut Y also acts as a means for clamping the rearward end of the carriage H securely to the lug c. For this purpose the feed nut Y is provided at its front end with a head (5 to bear against the carriage H adjacent the aperature Z'and theouter or rearward end 6 of the feed nut Y is exteriorlyithreaded for the reception of a nut 7 which bears against the rearward surface of the lug 0. Preferably ,a lock washer g i g at th w 7.- e Although only( an intermediate portion of.

shown) into the r, In practice,

of awell'known type is interposed between the, nut f and the lug 0 to prevent unscrewthe feed screw is shown in the drawings,

it is to be understood that said feed screw may be of a well known type which is anchored to the shell V against longitudi nal movement with respect thereto and pro- 'vided atjits rearwardend with suitable ,means, such as screw X may berotated in order to advance a crank, whereby the feed the rock: drill A in accordance with the penetration of the cutting implement (not rock, as well as for retracting the drill after the hole has whenever it is desired to convert a. hand held drill into, one of the drifter ward same 7 operative positions and the 30,

- holes inclined from the horizontal. p The foregoing described invention has yp th be removed from the drill body anda back head F substituted substitution of parts,

usualbaok'head and handles may therefor. After such the carriage may be placed in position and clamped to the for portion ofthe drill by means of the bolts'L andnuts VP. Thereafter the feed" nut Y and the .nut f, which may be the feed tin-tend lock nut wherewith" the shell V is equipped, may be placed in, the feed screw X may thenbe threaded into the feed nut Y.

After the partshave been thus assembled "and secured to the rock drill and 'thejshell,

it the entire assembly may be secured to suitable supporting means, suchas a column or bar for us in drilling horizontal holes or held drill a drifter.

been drilled,

been found particularly advantageous for use'on small work in whi'ch it is desired to drill both down holes and horizontal holes and in whichthe work does notwarrant a great I outlay or expenditure'lo'f money for equipment, that is, for both the hand of thetype to which the present invention is applied are" sufficiently rugged to withstand the severeusage to which they are subjected in both typesof drilling" this in p vention makes possible av conside'rablefsaving, not only in 1noney,'biitin"the matter of time as well. 7 Y

I claim:

in combination"with a cylinder and: back head, side bolts for-securing the back head to thefcylinder, a'lug von' theback head having an aperture, a carriage, a bearing on the Inasmuch as tools 7 V V A mounting for a rock"drill, 'comprising l:

inder and the side bolts,;r1bs onthe'carriage carria e aving an aperture registering avith t e aperture. in the afeed screw,

a feed nut in the apertures in threaded engagement with the feed'is orew for moving the carriage longitudinally of. the feed" screw, and" a nutonthe feed nut'for" clam ing the rearwarden'd of the carriage to t e lug.-.

for Su -am engaging a rockdrillshell, said: 1'

, In testimony whe e' fi have signed this,

specification.

EARL B a 

